A-392770 item 9 - Roll Stud

This National Acme replacement roll stud part number 1091 (item 56-XA) is used in Threading Lever Assembly A-392770.   View any of the following layout assembly drawings of the complete multispindle attachment for reference.  This replacement part may be used in attachment assemblies that fit numerous size Acme Gridley multi spindle screw machines and/or positions.

Acme Gridley 1-1/4" RB-8 Reaming Attachment - 4th Position
Acme Gridley 1-1/4" RB-8 Universal Threading Attachment - 4th Position